CVE-2026-40162 HIGH

CVE-2026-40162: Bugsink affected by authenticated arbitrary file write in artifactbundle/assemble

Vendor Bugsink
Product bugsink
Weakness CWE-20 · Input validation
Published April 10, 2026
Last update April 10, 2026

CVSS base score

7.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

What the vulnerability does

01Description

Bugsink is a self-hosted error tracking tool. In 2.1.0, an authenticated file write vulnerability was identified in Bugsink 2.1.0 in the artifact bundle assembly flow. A user with a valid authentication token could cause the application to write attacker-controlled content to a filesystem location writable by the Bugsink process. This vulnerability is fixed in 2.1.1.

Key dates

02Disclosure timeline

April 10, 2026 CVE published
April 10, 2026 Record updated